{"nhtsa_id":11034098,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-06-26","date":"2026-04-01","document_id":"M920023","mfr_campaign":"M920023","replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":null,"summary":"AC may not cool efficiently. Process walks dealer through how to install a direct dump feature to the AC system and add insulation in the front cab area.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11034098-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11034098-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11034098","components":[],"codes":[],"topics":[],"vehicles":[{"make":"GRAND DESIGN","model":"LINEAGE","year_from":2025,"year_to":2026,"match":null,"vehicle_ids":[]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}